node.js http module

http.js

'use strict';

const HTTPS = require('https');
const URL = require('url');
const QueryString = require('querystring');

module.exports = function() {
  return {
    postJSON: function(url, params) {
      const data = JSON.stringify(params);
      const contentType = 'application/json'

      return post(url, data, contentType);
    },

    postForm: function(url, params) {
      const data = QueryString.stringify(params);
      const contentType = 'application/x-www-form-urlencoded'

      return post(url, data, contentType);
    }
  };

  function post(url, data, contentType) {
    return new Promise(function(resolve, reject) {
      const urlObject = URL.parse(url);
      const options = {
        port: 443,
        hostname: urlObject.hostname,
        path: urlObject.path,
        method: 'POST',
        headers: {'Content-Type': contentType}
      }

      const request = HTTPS.request(options, function(response) {
        console.log('Response status: ' + response.statusCode);

        var data = '';
        response.on('data', function(chunk) {
          data += chunk;
        });

        response.on('end', () => {
          console.log('Data: ' + data);

          resolve(data.toString());
        });
      });

      request.on('error', function(error) {
        console.log('error: ' + JSON.stringify(error));

        reject(error);
      });

      console.log('\n\nOutgoing POST request to ' + url + ' with data: ' + data);
      request.end(data);
    });
  }
};